Ore classifier and feeder.



IQIENTED 3 3.26, 1907. v

" M GHRISTMANN ORB GLASSIPIER AND FEEDER.

APPLICATION FILED 001. 24, 1905.

2 snEETs-snEEE 1.

MICHAEL CHRISTMANN, or LEADVILLE, COLORADO one QLASSEFBER ans scene's.

Specification of Letters Patent.

Patented Feb. 26, 1907.

Application filed October 24,1905. Serial No.' 284,193.

1'0 alt w/wm/ it may concern: I Be it known that 1, MICHAEL Gruns'riuaxn,

1 a citizen of the United States of America, residing at Lea(lv ille, in the county of Lake 5 and State of Colorado, have invented certain new and useful lmprovementsin Ore Classifiers and Feeders, of which the followmg 18 a specification.

This invention, which pertains to improves ments in ore classifiers andfecders, has for its object to provide an apparatus which, operation, will ei'lectivelyclassify the pulp and separatelydischarge the various sizes of ore.

My device is particularly adapted to be used in. connection and cooperation with ore-concentrator tables and similar appliances.

I attain my objects by the mechanism illustrated in the accompanying drawings, in which. my apparatus has been shown in connection with a 'concentrator-table. of the type illustrated and described in my application for patent, Serial No. 264,154, filed by me in the United States Patent Ollicc June 7, 1905.

in the drawings, in thc various views of which like parts have ,b ecn similarly desig; nated, Figure 1 represehts a plan view of my device mounted on and opcrat-ivcly connected with a eoncentrator-table of the type named; Fig. 2, a side-elevation thereof; Fig.

3, an enlarged fragmentary view of the movement enc of the stationary frame;-

Fig. 4,- an enlarged vertical section taken alonga line 41 4,, Fig.1; Fig. 5, a fragmentary section taken along the line 5 5, Fig. 1, and Figs. 6 and 7, respectively, plan and elevation of the eccentric.

Referring to the drawings, (3 represents a bed or base frame consisting of the longitudinal beams 7 and 7 and cross-timbers 8, 9,

and 10, securely bolted together to form an adequate support for the recipromiting concentrator-table 12 and its operating mcchanisni 13.

Frame 6 has been extendcd at the feed end of the table to accommodate my 1111- provcd classifier and feeder 14, which in this instance is located between the head end of the table 12 and the operating; mechanism 13. The latter consists of a transverse shaft 15, mounted in boxes 16 at the extreme end of the frame and carrying a wiper-wheel 1'7, which engages a lever 18, fulcrumed at 19 and connected with the table by a draw or I thrust rod 20. Shaft may receive its ro ltary motion from any convenient source oi l power by mcansof pulleys 21. An apertured water-trough 22 supplies water onto the ritlled table-deck, while launders 23 and 24-, located at the lower or discharge side of the table, convey the gangue and silica dis charged therefrom into convenient receptacles. I v R My device consists of a pan 14-, composed of a bottom 25, having a slight ly cone-shaped upper surface and a surroimding outwardlyliaring peripheral side or rim 26. Pan. 14 is provided with a preferably integral centrallylocated upwardly-extending cylindrical projection or core 27, the upper surface 28 of which, being concave, forms a shallow receptacle to receive the pulp discharged therein from a superposed receptacle 30 through a Valve-controlled spout 29. A number of equidistant radially-extending, preferably inverted-V-shaped rifi'lcs 31 connect core 27 with the surrounding side 26. Pan His furthermore provid ed with two valve-controlled discharge-spouts 32 and 38, the lower one, 32, of. which, being located ncar the bottom, transmits the heavya d valuable particles contained in the pulp; while the other, 3

gangue,

It should be understood that although but two discharge-spouts have been shown in the drawings their number may be increased to obtain intermediate sizes of ore by interposing one or more additional outlets between the upper and lower ones, as shown at 34, Fig. 4. The number as well as the location of the intermediate discharge-spouts will naturally vary with the nature and fineness of the ore to be classified to facilitate the discharge of the particles of ore from the bot.- tom surface of the pan through spout 32. A j short channel 32, cut in the inner surface of side 26, leads from said surface into the outported to discharge-the lighter matter or let in the direction in which the pan rotates.

located near the upper edge of the pan, is purballs 36, interposed between oppositely-disface of bottom 25 of the pan. Sockets 3? and so are diametrically larger than balls l l l l I stationary frame by means of antifrictionl l p36 to permit a horizontal eccentric motion of pan M. This movement is imparted to the pan through instrumentality of two semispherically-shaped eccentrics 39, secured at the upper extremities of vertically-mounted shafts 40 and extending into correspondingly-shaped sockets 41, diametrically oppositely secured to the under surface of pan let. Shafts 40 are revolubly mounted in journals 42, secured .to platform 35, and in stepboxes 43, placed upon the cross-timber 9 of the stationary frame. They receive their rotary motion through instrumentality of bevel gear-wheels 44, mounted on the shafts at (points intermediate of their extremities an meshing into corresponding gear-Wheels 45, secured on a horizontally-rlisposed shaft 46, which is revolubly mounted in journals 47, erected on the cross-timber 9,wh1ch. con-. n'ects beams 7 of the stationa y frame.

A rotary motion is im .arted to shaft 16 from the main shaft o the table-reciprocating mechanism by means of a belt 48, which passes around pulleys 49 and 50, respectively,

'roeatin mounted on shafts fiand 15.

Having thus described the mechanical features of my apparatus, its operationis as follows: The pan being mounted on the platform at the head or feed end of the table, as described, extends above the latter a suili cient distance to permit the ore discharged through the lowermost outlet 32 to fall into a feed-box 51, mounted on the deck of table 12. Through instrumentality of the mechanism hereabove described a rand eccentric motion closely resembling hat of the ordinary miners pan is im artcd to pan 1% from shaft 15 simultaneous y. with the recipmovemcnt imparted to the table. The pulp contained in receptacle 30 is now permitted to fall into the shallow concave receptacle 28 in core-27 by opening the valve in s out 29. The, rapid eccentric movement oft 1e pan Will cause the pulp overflowing the pul edges of'projection 27 to be fed evenly over the inner surface of the. pan, thus separating and distributing the particles contained in the and greatly increasing the elliciency of t e device. Owing to the eccentric movement of the pan the heavy mincral-bcaring and most valuable particles will settle at the bottom, momentarily held by the rilllcs, to

subsequently pass through outlet 32 onto the table, while the lighter lesser values are held in suspension at elevations varying according to their. specific gravity,

-be1ng uppermost 1S discharged through the The an ue outlet 33, whilethc other values may be discharged, through the intermediate spouts 34 and conveyed to other tables, settlingtanks, or fkindi'ed contrivances. .In most cases, however, but two spouts are required to successfully operate my device, the upper one constantly removing the gangue, while the heavy mineral-bearing particles of the pulp gradually settle on the bottom to be.

mechanism.

Having thus described my invention, what I claim 1sin combination, a stationary support, a pan movably mountedthereon and including a central core having a concave upper surface, and a concentric wall, spaced therefrom and having a )lurality of dischar e-openingsat varying efevations from the bottom of the pan, and means to impart a gyratory movement to the pan.

2. An ore'clas'sifier and feeder comprising in combination, a stationary support, a an movably mounted thereon, and" inclu ing a central core having a concave upper surface and a wall concentrically spaced therefrom and having a discharge-opening level with the bottom of the pan and a discharge opening elevated therefrom, and means to impart a gyratory movement to the pan.

An ore classifier and feeder comprising in combination with a stationary frame, a pan movably' mounted thereon and having a conical floor, a central, cylindrical projection having a concave surfaceadapted to receive and distribute )ulp fed on its upper surface, the said pan .having peripheral dischargeopenings at varying elevations from the said floor.

4. An ore classifier and feeder comprising in combination with a stationary frame, a pan inovably mounted thereon and havin a conical floor and invertcd-V-shaped rill es extending radially along said floor, means to feed pulp into the said pan means todischarge. thesame at its periphery atdiiferent elevations from the said floor, and means to impart a gyratory movement to the pan.

5. An ore classifier and feeder comprising in combination with a stationary frame, a pan movably mounted thereon and having a conical floor, a centralcylindrical projection having a concave surface adapted to receive MIcHAEL CHRISTMANN.

Witnesses 1 Gno. M. M. BOWEN, WILLIAM H. NASH.

so desired, may be operated independent of the table and by any suitable operating and distribute pulp fed upon its upper sur 1. An ore classifier and feeder comprising 

